One of the main themes is human loneliness. In many of his stories, characters are isolated in their own thoughts and situations. For example, in 'The Lady with the Dog', the two main characters are lonely in their marriages and find a connection with each other, but that connection is also tinged with the sense of being alone in society's expectations.
The character of Sasha in 'A Boring Story' is quite memorable. He is a young man with a lot of potential but also a lot of flaws. His relationship with his uncle, the narrator, shows his struggle to find his place in the world. Also, in 'The Bet', the young lawyer who endures years of isolation for a bet is a character that stays with the reader. His development over the years of the bet, from a young, confident man to a more jaded and philosophical one, is very interesting.
There's also Liza in 'The House with the Mezzanine'. She is a young woman full of life and ideals, and her relationship with the narrator is complex and interesting. Varya in 'The Cherry Orchard' is another character that stands out. She is practical and tries to save the family's orchard, in contrast to the more dreamy and irresponsible characters around her.
One common theme is the human condition. Chekhov often explored the quiet desperation and unfulfilled dreams of his characters. For example, in 'The Lady with the Dog', the theme of love and the complications that come with it are central. Another theme is the passage of time and how it affects people. His characters are often in a state of flux, changing as they experience different events. Social class differences also play a role. He shows how people from different classes interact and the misunderstandings that can occur.
The themes of isolation and loneliness are prevalent. Many of his characters seem to be alone in their thoughts and experiences, even when surrounded by others. Additionally, the idea of missed opportunities is a theme. Characters might have had a chance at love or a better life but let it slip away due to various reasons like indecision or social constraints.
One memorable character is Olga in 'The Lady with the Dog'. She is a complex character caught in an affair. Her struggle between her love for Dmitri and her sense of propriety makes her stand out.
I'm not entirely sure off - hand, but typically Chekhov's stories have complex characters. I would need to read the story again to accurately name the main characters.
There are various main characters in his love stories. For example, in some stories, there are young intellectuals. These characters are often torn between their ideals and the reality of love. They may be in love with someone who doesn't fit society's expectations. There are also female characters who are strong - willed yet face limitations in expressing their love due to social constraints.
Ivan Dmitritch from 'The Lottery Ticket' is quite memorable. His sudden change from a content man to one full of greed and envy when he thinks he might have won the lottery is striking. Another is Olga in 'The Darling'. Her ability to adapt to different men in her life and almost lose her own identity in the process is very interesting.
Literature enthusiasts would definitely enjoy it. Those who like to explore the depths of human nature and emotions will find a lot to love in Chekhov's stories. People interested in Russian literature in particular would be drawn to it, as Chekhov is a major figure in Russian literary history.